STABLE PERFORMANCE---The voltage surge arrester device is made of precise electronic pone with longer service life and more stable performa helping to finish your work more effectively GOOD ELECTRICAL CONDUCTIVITY---The voltage surge arrester device is of purple copper fitti with good electrical conductiv adopting modular des and its use and maintenance are very simple SIMPLE INSTALLATION---The voltage surge arrester device adopts 1P guide rail installat installation is very simple. Installation with standard 36MM guide rail and use with circuit breaker in distribution box SAFE TO USE---The shell of the voltage surge arrester device is made of PC flame retardant mater which is safer t with good quality and fine performa deserving your choice SUPERIOR AFTER SAL ---Please feel free to contact us for your any problems about our product. It is our pleasure to service you. Do not doubt your importance to us.